Whenever the Department of Financial Institutions has reason to believe that any person or corporation engaged in the business of lending money is contracting for, receiving, or collecting unlawful interest for any loan not exceeding $5,000 (in violation of this Act, or the Consumer Finance Act, or the Consumer Installment Loan Act, or any other Act regulating interest for loans of money), it may after notice and hearing enter an order requiring such person or corporation to cease and desist from contracting for, receiving, and collecting unlawful interest. At least 5 days’ notice shall be given setting forth the time and place of the hearing and the nature of the violations charged (including the means by which said Department alleges that unlawful interest has been contracted for, received, or collected). The order shall specify in writing the violations found and shall become effective not less than 5 days after delivery thereof to the person or corporation named in the order. If the person or corporation named in said order continues said violation for more than 15 days after receiving a certified copy thereof by registered or certified mail, the Department of Financial Institutions may bring an action in the circuit court to enjoin such person or corporation from engaging in or continuing such violation. Such action shall be conducted under the direction and supervision of the Attorney General. The practice and the powers of the court in such proceedings shall be as in other such civil proceedings.